Improvement in nail-plate feeders



A. H. TYRRELL S2 S. EVANS. NAIL-PLATE FEEDER.

No. 193.577. Patented. July 24,1877.

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NJTERS, FHOTO-LITHOGRPHER, WASHINGTQN. D. C.

UNrrnn STATES P'rEN'r (Situer.G

ASAHEL 'H.TYRRELL, OF FOWLER, AND SAMUEL EVANS, OF NILES, OHIO.

IMPROVEMENT IN NAIL-PLATE FEEDERS.

Specification forming part of Letters Patent No. 193,577, dated July 24, 1877-; application tiled v May 28, 1877.

a vertical transverse section of our improved nail-plate feeding machine, on line ww, Fig. 2. Fig. 5 is a sectional view, representing the point of the working-barrel laid open longitudinally to show the spirally-inclined shoul ders for turning the nail-plate when inserted in the barrel.

Similar letters of reference indicate corresponding parts.

The invention has reference to an improved nailplate feeding machine, by which the proper taper of the nail is adjusted and the position of the nail-plate and the turning and feeding of the same to the cutters accomplished by a simple and effective mechanism.

The invention consists in the construction and arrangement of parts for hinging and adjusting the side plate to which the feed mechanism proper is attached, for imparting the desired movement to the working barrel or cylinder, for Workin g the cam-rod, and for automatically turning the nail-plate when pushed into the barrel, and guiding it into the slot in the nose ofthe barrel, all as hereinafter described.

In the drawing, A represents the stationary, bed-plate of our improved nail-plate feeder, which is supported on a suitable bed-frame and bracket-stays, in proper position to the of the side plate and its attached mechanism.'

The same means, therefore, serve to hinge the side plate B to and support it upon the plate A, and also to provide for its adjustment.

The side plate B is provided at the top part with guides for 'the reciprocating cross-head nD, that imparts the required rotary motion to the Working-barrel E and the feed-'motion to the nail-plate rod. 4

The barrel E turns in side supports or bearings E1 of the side plate B, and is provided with longitudinal grooves `b, that are curved or inclined at the rear ends to meet the curved parts of the adjoining grooves, and guide thereby the roller b of the cross-head D, so as to impart intermittent rotary motion to the barrel E, and stop and hold the nail-plate at its proper place and length of time for the action of the cutters.

The ends of the barrel E, adjoining the bearers E1, are inclined or concaved at opposite sides, so as to produce, with the correspondingly-concaved sides of the bearers, a forward and backward movement of the working-barrel E, and place the end of the nailplate in exact position for the cutters, and admit the receding and clearing of the cutters when revolving for assuming the next position for cutting. v

' A second roller,d, of the cross-head D, slides along straight and inclined guides d' of the ates by its enlarged end a pivoted cam, e, that engages a pin, e', of a longitudinally-sliding and spring-cushioned cross-head, f, that tightens, by recessed arms f1, the clamping-dogs-g onto the nail-plate feed-rod G. The fulcrumed dogs g are set opposite to each other on a second independently-sliding crossl`iead,f2, and work jointly on the feed-rod for carrying the same in forward direction', but releasing the same in backward direction.

A set-screw, acting on the end ofthe second cross-head f2, adjusts the length of feed of the nail-plate to a nicety.

The slotted end of the feed-rod Gr carries the nail-plate in the customary manner through the slotted and spring-clamped point or head E2 of the barrel to the outside of the same.

The inside of the point E2 is provided with inclined shoulders s at opposite sides, for the purpose of guidingthe nail-plateautoinatically along the shoulders into the guide-slot andk to the side clampingsprings, which press 0n the edges of the nail-plate and hold it in position as the working -barrel revolves. The proper feed is thus given to the nailplate, and the same readily guided to the point of the barrel, so as to be exposed to the cutting-action of the knives.

W'e do not broadly claim inclined shoulders Within the working-barrel of a nail-plate feed er, since we are aware such have been employed as an aid in guiding the plate into the end slot ofthe tapered point or nose of a barrel; but in our invention the shoulders have a spiral inclination, and are so arranged one to the other that when the plate comes in contact with them, on being pushed forward in the barrel, they will automatically turn the plate, While the barrel remains stationary.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. In a nail-plate feeder, the stationary plate `and with straight and inclined guides of the side plate, to impart simultaneously rotary and up-and-down motion to barrel, substan-l tially as and for the purpose described. y

3. The reciprocating cam rod, laterallyswinging cam, sliding and spring-cushioned.

cross-head, having recessed arms, and clampin g-dogs pivoted to second independently-sliding cross-head, all in combination with the nail-plate feed-rod, substantially as and for the purpose set forth. l

4. .1n a nail-plate feeder, the Working-barrel, having spirallyinclined and oppositely-located shoulders, each extending nearly half way round the interior of the cylinder, as shown and described, so that, in case the nail-plate is inserted inl the cylinder with its transverse plane more or less inclined to the slot in the tapered point of the cylinder, it will, when pushed forward, be partially rotated to bring it into coincidence with the slot, as specified.

A.- H. TYRRELL. sAMUELEvANs. y

Witnesses S. SLoAN, WILLIAM BROWN. 

